ZCU104 Board User Guide 36
UG1267 (v1.1) October 9, 2018 www.xilinx.com
Chapter 3: Board Component Descriptions
The USB3320 ULPI U116 transceiver circuit (see Figure 3-4) has a Micrel MIC2544 high-side 
programmable current limit switch (U121). This switch has an open-drain output fault flag 
on pin 2, which turns on LED DS51 if over current or thermal shutdown conditions are 
detected. DS51 is located in the U116 circuit area near pushbutton SW4 (Figure 2-1, callout 
20).
Table 3-7: USB 2.0 ULPI Transceiver Connections to XCZU7EV MPSoC
XCZU7EV (U1) Pin Net Name
USB3320 U116
Pin # Pin Name
 U168.4   ULPI0_RST_B
(1)
 27 RESET_B
H31   MIO58_USB_STP
(2)
 29 STP 
G30   MIO53_USB_DIR   31 DIR 
G29   MIO52_USB_CLK   1 CLKOUT 
G33   MIO55_USB_NXT   2 NXT 
G34   MIO56_USB_DATA0
(2)
  3 DATA0 
H29   MIO57_USB_DATA1
(2)
  4 DATA1 
G31   MIO54_USB_DATA2
(2)
 5 DATA2 
H32   MIO59_USB_DATA3
(2)
  6 DATA3 
H33   MIO60_USB_DATA4
(2)
  7 DATA4 
H34   MIO61_USB_DATA5
(2)
  9 DATA5 
J29   MIO62_USB_DATA6
(2)
  10 DATA6 
J30   MIO63_USB_DATA7
(2)
  13 DATA7 
Notes: 
1. PS_POR_B (U1.M24) or PS_MODE1 (DIP SW6.2) drive U116 RST_B via OR gate U168.
2. These nets are 30Ω series resistor coupled.